868986 has 24 divisors (see below), whose sum is σ = 1965600. Its totient is φ = 276936.

The previous prime is 868957. The next prime is 868993. The reversal of 868986 is 689868.

868986 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 636 + ... + 1463.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2⁸⁶⁸⁹⁸⁶ is an apocalyptic number.

868986 is an abundant number, since it is smaller than the sum of its proper divisors (1096614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868986 is a wasteful number, since it uses less digits than its factorization.

868986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2127 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 868986 is about 932.1941857789. The cubic root of 868986 is about 95.4269243521.

The spelling of 868986 in words is "eight hundred sixty-eight thousand, nine hundred eighty-six".